You've heard the term on the news, you've seen it thrown around on Twitter, and now it's time to go to the source. We're talking about gaslighting, the practice of manipulating someone into doubting their own experience and sanity. It comes from a 1944 film starring Ingrid Bergman, Charles Boyer, and Joseph Cotten (and a very young Angela Lansbury in her first film role). Many years after her aunt was killed, Bergman moves back into the house where it happened with her new husband (Boyer), and things start to go downhill quickly.
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